Supplementary air-supplying device for automobile-engines and the like.



E. M. LYNCH.

SUPPLEMENTARY AIR SUPPLYING DEVICE FOB. AUTOMOBILE ENGINES AND THE LIKE. APPLICATION FILED JULY 14, 1918.

1,117,682, Patented Nov. 17, 1914.

acrvyajww UNITED STATES r grnur OFFICE.

EDWARD M. LYNCH, OF ST. LOUIS, MISSOURI, ASSIGNOR F ONE-THIRD TO W'HITSON C. BUCK AND ONE-THIRD TO HUMPHREY A. BUCK. BOTH OF ST. LOUIS, MISSOURI.

SUPPLEMENTARY AIR-SUPILYING DEVICE FOR AUTOMOBILE-ENGINES AND THE LIKE.

To all whom it may concern Be it known that I. EDWARD M. LYNCH,

. a citizen of the United States, residing at ing Devices for Automobile-Engines and the like, of which the following is a specification. reference being had theiein to the accompanying drawings.

This invention relates to certain new and' useful improvements in supplementary airsupplying devices for automobile-engines.

of the type adapted to supply a supplementary amount of air to the mixture of air and gasolene that is drawn from the carbureter to the cylinders of an automobile engine or the like.

The primary object of the invention is to provide improved means for supplying a supplementary quantity of air to the combustible mixture, which means is of simple and economical construction, and which also serves to allow cleaning of the engine cylinders by the introduction into the lat? ter of kerosene for the purpose of burning out the carbon deposits in the latter, thus obviating the necessity of removing the spark plugs and other parts when the cylinder or cylinders are to be cleaned.

In the drawings: Figure 1 is a side elevation of the invention applied to a inanifold; Fig. 2 is an enlarged top plan view of the invention, the manifold being shown in fragmentary section; Fig. 3 is a section taken on the line 3-3 of Fig. '2; and Fig. 4 is a detail view, in perspective, of the valve and its stem.

The invention consists of a device which is secured or attached to the manifold intermediate the carbureter and the cylinders, as depicte l in Fig. 1, which device embodies a c' .lng 1 that has its inner end '2 reduced and exteriorly threaded and engaged with a threaded opening 3 formed in a side wall of the manifold 3. The peripheral-comtour of the casing is preferably angular, such as hexagonal, to receive a wrench or the like to allow the casing to be securely threaded into engagement with the manifold. The outer end of the casing is reduced at -l and has a smooth cylindrical surface which latter is engaged bythe im ner circumference of an annular flange 6 of Specification of Letters Patent.

Application filed July 14. 1913.

Patented Nov. 17, 1914.

Serial No. 778,841.

a cap or nut 5 that slides on the periphery of the reduced outer end 4. The outer end of the cap 5 is closed and is provided with a central opening which is threaded and which receives the threaded outer end portion 7 of the valve stem 8. The inner extremity of the stem 8 has a conical valve 9 formed thereon which engages in a .valve seat 10 formed on the inner end of the casing 1. The casing 1 has a bore 11 which extends through the inner end of the casing and a chambered portion 12 which extends through the outer end of the casing, the valve stem being received in the bore and chambered portions as illustrated in Fig. 3 of the drawings. The valve stem 8 is flattened on one or more sides at 13 and is sin-rounded by a coil spring ll which latter at one end extends within the flange 6 of the cap 5 and at its opposite end abuts the shoulder 15 which is formed by the inner end of the chambered portion 12. wherebv it will be seen that the spring holds the, valve 9 in its seat 10 as depicted in Fig. 3 of the drawings.

A funnel 16 is attached to the casing 1 in an upright position and serves not only as an air inlet, but also as a means whereby kerosene may be poured into the casing for a purpose now to beset forth. J

In operation. the suction in the engine cylinder. causes the valve 9 to open in wardly with the result that a quantity of air enters funnel 16. and passes through bore ll in the space between the walls of said bore and the flattened part or parts 13 of the valve stem into the manifold. The air drawn into the manifold as just described dilutes the mixture of air and gasolene from the carbureter C. so that when the charge is fired it expands with greater pressure and thus not only increases the speed of the engine,- but also allows the latter to be run with use'of'less gasolene and thereby effects saving in the expense of fuel. By adjusting the cap on the valve-stem 8 the tension of the spring may be regulated to permit the quantity of air that enters the manifold to be regulated or governed. as desired.

When cleaning of the engine cvlinders is to be effected. the cup or funnel 16 is filled with kerosene. which latter is dra n into the cylinders upon the suction stroke of the piston, and which burnsout any carbon deposits, thus eliminating the removal of the; spark-plugs and 'other parts when the cleaning operation is to be effected,

What is claimed is:

In a device of the type set forth, a valve casing having a reduced exteriorly threaded inner end, avalve seat on the inner eX- tremity of the casing, the outer end of the casing having a smooth periphery of circular cross-section, said casing having a bore which extends through its inner end and a chambered portion which extends through its: outer end and forms a shoulder at the point of juncture with the inner end of the bore, a valve engaged with said seat and having its stem flattened in part and extending through the bore and chamwith said shoulder a cap threaded on the stem and having a flange that slidingly engages over the said outer end of the casing,

the other end of the spring extending within the flange of the cap and abutting the closed end of the latter, and a funnel on the casing in communication with the chamber thereof. v

In testimony whereof I hereunto afiix my signature in the presence of two witnesses.

EDWARD M. LYNCH. Witnesses:

R. J. Mate, A. C. GERBER. 

